Mechanical Advantage sets for Arborists

More Info

SMC Advance Tech HX Pulley New in 2012!

Double pulley with integrated cam that provides immediate progress capture without the need of prusik loops. Stainless pins retain the rope when a rigged system is packed so that system can be pulled out and used immediately. Manufactured from high quality aluminum and anodized to help prevent corrosion. Ideal for all rescue applications where a small mechanical advantage system is being utilized. Up to 1/2” capacity. 34kN / 7,650lb breaking strength (18 kN / 4,050 lb for the becket).

Advance Tech HX Mechanical Advantage Kit New in 2012!

Generate mechanical advantage with the Advance Tech HX pulley from SMC with built-in progress capture and quick release of the cam (even under tension). This compact system can be used in place of bulkier block and tackle sets due to the high strength of the SMC pulleys and RockO carabiners. A great system for quick mechanical advantage with built-in capture and smooth operation.

Contains: SMC Advance Tech pulley, 60' of 7/16" HTP rope, two Rock Exotica RockO ORCA-locking carabiners, quick link, and SMC Double-Sheave NFPA Micro Pulley. Color of rope may vary.

5:1 Block and Tackle

Get more power for your work with this 4 pulley system. Upper block has integrated cam device to hold forward progress of rope. Can be used to help you get the most from your Port-a-Wrap. The mechanical advantage you generate with this set will help lift and lower the heaviest of loads.

Blocks have 1,000 lb WLL • Works with all 1/2” lines • Generates a 5:1 mechanical advantage.

Block and Tackle Sets

Take the block and tackle kits above and add ArborMasterR Bigfoot rope pre-spliced (Sewn eye splice) to the upper block for a handy mechanical advantage system. Now available with longer rope sections for increased movement capacity in the load.

Large Block and Tackle Kit

This kit is designed for heavy duty applications where breaking strength and power are more important than weight or size. Generates a 5:1 advantage and comes with a built-in progress capturing rope grab. Allows 10-15’ of movement in the load.

Contains: 2 fiddle blocks, 50’ of Bigfoot rope, 2 screw locking carabiners, and 1 Gibbs rope grab.

Click the picture to see a view of the entire system.
(Sling and Port-a-Wrap sold separately)

Medium Block and Tackle Kit

This kit is intended for medium duty applications where breaking strength, power, weight, and size are equally important. Generates either a 4:1 or a 5:1 mechanical advantage, depending on how it is set up. Does not have a progress capture feature. Allows 10-15’ of movement in the load.

Contains: 2 double sheave pulleys, 50’ of Bigfoot rope, 2 screw locking carabiners, 1 screw link, and 1 pre-tied prusik.

Small Block and Tackle Kit

This kit is intended for light duty applications where light weight and compact are more important than breaking strength or power. Generates either a 4:1 or a 5:1 mechanical advantage, depending on how it is set up. Does not have a progress capture feature. Allows 5-8’ of movement in the load.

Contains: 2 double sheave micro pulleys, 25’ of Blaze rope, 2 screw locking carabiners, 1 screw link, and 1 pre-tied prusik.

Z-Rig Kit

This Z-Rig kit has everything needed to setup quick mechanical advantage for inducing lean in trees. In the picture to the left, you can see the WesSpur crew applying tension with a Z-Rig during a tree-felling. The kit is available with everything needed including rope and anchor sling, or in a pared down version without rope and sling for those who already own them and just need the mechanical advantage components.

Contains: Petzl 1/2” prusik minder pulley, Petzl 1/2” rescue pulley, Petzl Paw small rigging plate, 3 Omega Pacific oval screw lock carabiners, 2 Tenex 3/8” eye-to-eye prusiks, 5/8” x 3’ - 7’ Whoopie sling (optional), 150’ of Samson Pro-Master 1/2” (optional)